/Engine/Source/Runtime/Core/Public/Modules/ModuleManager.h
Sets the filename for a module. The module is not reloaded immediately, but the new name will be used for subsequent unload/load events.
void SetModuleFilename ( [FName](API\Runtime\Core\UObject\FName) ModuleName, const [FString](API\Runtime\Core\Containers\FString) & Filename )